Title :
Analysis of transverse magnetic field in the vacuum interrupter based on orthogonal design
Author :
Yu, Li ; Yuan, Shun ; Wang, Yan-jie ; Li, Feng
Author_Institution :
Sch. of Electr. Eng., Shenyang Univ. of Technol., Shenyang
Abstract :
Five structural parameters of contrate contact, such as number and inclination of slot, contact diameter, the depth and thickness of contact cup, are arranged orthogonally to study magnetic characteristics. Experiments based on orthogonal design are analyzed by three dimensions finite element method. The regression equations of the relationship between structural parameters of contact and Lorentz force acting on the arc are given. In addition, the relationship between arc speed of the constricted arc and Lorentz force is investigated with the help of one-dimensional thermodynamic model of arc. The maximum rated short-circuit current varies as 0.4 power of the contact diameter.
Keywords :
finite element analysis; magnetic fields; regression analysis; short-circuit currents; vacuum interrupters; 1D thermodynamic model; 3D finite element method; Lorentz force; contact structural parameters; orthogonal design; regression equations; short-circuit current; transverse magnetic field; vacuum interrupter; Conductors; Equations; Interrupters; Lorentz covariance; Magnetic analysis; Magnetic fields; Magnetic flux; Structural engineering; Thermodynamics; Vacuum arcs;
Conference_Titel :
Automation Congress, 2008. WAC 2008. World
Print_ISBN :
978-1-889335-38-4
Electronic_ISBN :
978-1-889335-37-7
